Governor.



PATENTED AUG. 11, 1903.

' N. LOMBARD.

GOVERNOR.

APPLICATION FILED AUG. 11, 1902,

7 SHEETS-SHEET 1.

- N0 MODEL.

Mi li llllllllllc liwcni'or; jlidhaniellombard,

7 77mm aMMZE" pm 00. PHorn-LITNOJ WASHINGTON n c PATENTED AUG. 11, 1903.

N. LOMBARD.

eovmmo APPLICATION FILED AUG. 11, 1902.

7 SHEETS-SHEET 'NO MODEL.

Wlbwsses: Inventor:

' jalhwu'cllombard,

MQW

Tens w, wovmumau WASHING PATENTED AUG. 11, 1903.

N. LOMBA-RD.

GOVERNOR.

APPLIGATION FILED AUG. 11, 1902.

ismmvsnnm 5.

1m menu.

Wibwssas' No. 736,276. PATENTED AUG. 11, 1903.

N. LOMBARD.

GOVERNOR.

APPL IOATION FILED AUG. 11, 1902.

\ m w m E 1 ,1 r 3 WM. s I mmnl u AW .H I i 7 M MN 0 5 5 a 7 H? 9 6 0 MM a; 7 w 2 o. a H w C27, m WM w W 7 Ni mg A o ii I N w w m l i, W a 0M.m 8 m m 1 M. 9 W .lnm

Ill/ll c 1 lnmn W h HOIJODEL.

Y: NORRIS PETERS PHD UT WK "(G "he vacate.

, UNITED STATES-'3 Patented. August 11, .1903.

NATHANIEL LOMBARD, or-BRoo LiN MASSACHUSETTS,ASsicNoR TO THE N.LOMBARD-lMPROVED. GO ERNOR COMPANY, or nosron, MASSACHUSETTS, ACORPORATION or MAINE.

*covERNoRL srEcIFIoATrorr forming part f Letters patent No. 736,276,dated'August ll, 1903.

Application filed August 11, 1902 Serial No. ll9,149. (No model.)

T mulch/0m, it may concern: Be it known that I, NATHANIEL LOMBARD, acitizen of the United States of America, and

a resident of Brookline, in the county of Nor claimed. f

In the accompanying drawings, Figure '1 is a rear elevationof oneembodiment of my invention with the portion of the driving mechanismremoved. Fig. 2 is an end elei 9 is a vertical transverse sectionthereof; and

Figs. 10 and 11. are a broken and front side elevation, respectively, ofthe device for preventing the rotation'of the valve-rod.

Similar characters indicate like parts throughout the several figures ofthe drawlugs. y i

The numeral 10 designates a suitable baseplate,'on which is journaled instandards 11 a shaft 12. for connection with the gate or regulatingdevice for controlling the speed of a motor-as, for example, ai3Lllbll16-Wi168lwhich shaft may be appropriately termed amotor-controlling shaft. In the standards 11 may be also journaled apreferably hollow Fig. 3 isa central vertical Fig. 4 is an enlarged tothe actuating-shaft.

ber.

actuating-shaft 13 for the motor-controlling shaft, they beingconveniently connected by spur-gears l5 16, the latter preferablyreleasably fixed to the Shaft 12 by some such conector as a pin-clutch17, carried by'an arm 18, fast upon the shaft and engaging an opening inthe gear. The actuating-shaft has fastnpon it the inner members ofclutches or connectors 21, the outer members of which are fixed to orformed integrally with driving-shafts 22 23, respectively, which arehere shown as hollow, surrounding the actuating-shaft and journaled inthe standards 24, supported upon the base-plate between the standards11. The driving-shafts may be conveniently rotated in oppositedirections by bevel-gears 25, meshing with a bevel gear 26, fixed to ashaft 27, conveniently journaled in one of the standards and. rotated atthe desired speed from any suitable source of power through a pulley 28.The outer member of each clutch may consist of a flanged disk 29,whilethe inner coaoting member is preferably formed as a divided ring 30,carried by an arm 31, having its hub keyed A leather facing 32 is shownas secured to theouter surface of the ring 30. This ring may be expandedto frictionally 'coact with the outer member by a toggle-lever havingthe arms 33 33, pivoted to lugs 34, projecting from the opposite sidesof the ring and to an intermediate block 3 5. The arms may be madeadjustable in length by including a right and left hand coupling 36,into which they are threaded, check-nuts 37 at each end serving tomaintain the adjustment. If desired, a spring 38 maybe providedextending between the sections of the ring to hold it normally out ofcontact with the outer mem- To each block is connected a chain orflexible member 38, conveniently passing over a guide-roll 38 turning ona pin fixed to the actuating-shaft and into a recess 38 in an operatingrod or member 39 for the clutches located within the actuating-shaft,these chains extending from the clutches in opposite directions.

One end of the operating-rod is connected bya swivel 40 and a yoke 41 toa lever 42 through oppositely-projecting stub-shafts 43 thereon. Theseshafts also furnish a support for the lever, which permits itto turn andalso to have a movement of translation by bearing in elongated recesses44 in arms 45, projectingfrom one of the standards 11,

rollers 46 being preferably provided upon the desired regulatingmovement, one end of the lever, here shown as the upper end, is providedwith a set of teeth 47, forming a segmental spu r-gear. With thissegment meshes a rack 48, conveniently guided by an upright 49 andconnected wit-h the rod,50 of a piston 51, operating in a powercylinder52, shown as supported by posts or uprights 52 from the standards 24.To-either end of this cylinder hydraulic or other pressure may beadmitted by controlling mechanism to be later described. The oppositeend of the lever from that cooperating with the rack 48 is provided with.teeth 53, here shown as forming a segment of a worm-wheeland meshingwith a worm 54 upon a shaft 55, suitably journaled upon the base-plate.This shaft either remains stationary or is rotated in one direc tion orthe other, depending upon the condition of the clutches 20 21, bygearing 56, con meeting it with the actuating-shaft, the parts being sorelated that the movement it imparts to the lever will be in theopposite direction from that caused by the rack.

To control the admission of power to the cylinder,a valve, preferablycomprising a hollow body 57, reciprocating within a casing 58, supportedin a chest 58, is provided. Both body and casing have a series ofopenings 59, suitably arranged to admit the fluidpressure suppliedthrough a passage 60 in the chest to either one of two passages 61 61 ateither end of the cylinder, and at the same time permit exhaust from theopposite end through a passage 62. To enable the valve to be adjusted,its casing may be closed at the top by a cap or dome 63, threaded uponthe chest at 64. A hand-wheel 65, secured to the cap, allows the casingto be readily turned, and thus raise and lower the openings and changetheir relation to those of the inner body. To the valve-body is fixed arod 66, extending up through the cap 63 and connected with centrifugagoverning mechanism to be now described.-..

From convenient points as from the top of the cylinder, rise posts oruprights 6 7, carry ing a suitable plate 68, upon which is supported astandard 69, having stepped in it a hollow shaft 70. Fastened upon theshaft, preferably by a thread 71' at its upper end, is ,a sleeve orhollow shaft 71, here shown as integral with a disk or platform 72,serving as a primary support for the go vernor members to be hereinafterdescribedfa The sleeve may have upon it a bevel-pinion73, meshing witha'bevel-gear 74 upon a shaft 75. This shaft is journaled in a bearing 76in the standard 69, and continuously rotated at the desired speedthrough a pulley 77, conveniently belted to a pulley 7'7 on the shaft27.

The platform 72 preferably carries a sec- I ondary support or platform78 for centrifugal members or weights 79, these weights beingconveniently two in number of sector shape, and the platform 78 may beof similar shape, being only of sufficient extent to furnish the propersupport. As here illustrated this secondary support is mounted forindependent rotation upon the platform 72 by means of balls or otherantifriction members 80 moving in circular ways 81 82 in the 1 primaryand secondarysupports,respectively.

in number, of spiral form and extending between the weights on eachside. To compensate for differences in tension and permit the weights torun smoothly without cramping or throwing uneven pressure upon theballs, these springs are connected to the opposite ends of yokes 90,pivoted at 91 upon each weight. The secondary support is yieldablyconnected with the primary support to resist the movement of the former,for a purpose to be later explained, by springs 92, in the presentinstance shown as spiraltension-springs, fixed at their ends andextending radially between the two supports.

In alinement with the valve-rod 66, form ing an extension thereof, is acontrolling-rod 93, preferably extending through the hollow shaft 70 andsupported at or near its upper end by an internally-threaded sleeve ormember 94, swiveled to the rod at 95, the thread of which sleeve coactswith a screw 96, fixed with regard thereto. A convenient means ofsupporting the screw 96 is upon an inclosing casing 97, secured to theprimary support,

it extending therethrough and being held against longitudinal movementby a collar 98 abutting against the under side of the top of the casing,and a nut 99, threaded upon the shank of the screw on the upper side.The setting of this nut also holds the screw from rotation in thecasing, but when loosened permits a rotary adjustment to raise orlowerthe rod 93 thereon. The weights are geared to the sleeve 94 preferablyby racks 100, shown as adjustably mounted upon the weights by the shanks101, threaded into the openings therein and held in place by checknuts102. These racks mesh with teeth 103,

forming an elongated pinion upon the exterior ofthefsleeve, and sincethe racks are on opposite sides the opposite movement of the weightstoward or from one another acts to rotate the sleeve in one direction.Rolls 104,

. preferably turning on studs 105, carried by the secondary support,coactwiththe back of the racks to retain them in proper relation to thesleeve.-- Rotation of the rod 93 under the influence of the rotation ofthe sleeve maybe prevented by a pin 106, extending from the rod betweena pair of guide-pins 107,

The controlling-rod 93 is 109, formed with or secured to the rod 93.

or pulley 114 and a pinion 115.

a pinion.

The exterior of the sleeve 108 is provided withgear-teeth 109, formingan elongated pinion meshing with rack-teeth 110, prefer ably of circularform or extending entirely around a shaft 111, journaled both for rota-.tion and reciprocation conveniently in the standard 69. Upon the plate68 may be secured a small standard 112, in which is journaled a shaft113', having fast upon it adrum In a bore adjacent to this pinionslidesa sleeve 116, hav ing at one side a rack 117, meshing with the t Thesleeve is internally threaded to receive a thread 118 upon one end ofthe shaft 111. This shaft also has secured to it a roll119, having itsoutwardly-curved face bygearing123 to the sleeve 71.

contacting with a disk or member 120, which may, if desired, be providedwith a renewable surface of leather or other suitable material 121. Thedisk 120 is carried by a shaft 122, conveniently journaled in a bearingformed in the standard 69 and continuously rotated during the revolutionof the weights The pulley 114 may be rotated in one direction byconnection with some reciprocating element, preferably of the governor,as a post 123*,

moving, with the piston-rod 50, through a flexible member or cord 124,fastenedat 125 in a groove in the pulley and extending over a guide-roll126. Opposite movement of the shaft 113 may be secured by a coil-spring127,

conveniently located within a casing 128, carried by the standard 112and pinned at 129 and 130 to the casing and shaft, respectively.

The rotation ofthe shaft by thecord acts to wind up or put tension uponthe spring, which upon the slackening of the cord serves to impart areverse rotation to the shaft.

The operation of my improved governor is as follows: With the parts inthe relation here illustrated power is applied to the pulley 28 to drivethe centrifugal mechanism lefthandedly at such a rate that normally forthe desired speed of rotation of the motor the weights are substantiallyat the center of their range of movement, and the various screws, racks,and the roll will also be at the center of their path. This conditionconpinion and rack to the left.

release the tating more rapidly, causing the weights to lmove outwardlyupon the secondary support under the increased centrifugal forcegenerated, and their racks, moving by the sleeve 37, rotate it so thatit moves down the screw 39. This lowers the valve 57', admittingpressure to the right-hand end of the cylinder.

(See Figs. 1 and 6, where the movements of the various elements-areindicated by arrows.) The travel of the rack 48 as a result thereofmoves the coacting end rocking on the worm. This movement of the levercarries the operating-rod 39 to the left, sets the clutch 20, andcompels the actuating-shaft tovrotate with the driving-shaft 22right-handedly, turning the shaft 12 in such a direction as to close thegate if, for

example, a hydraulic system, is being governed; but beforetheabove-mentioned movement of the weights occurs the second arysupport, lagging behind the primary sup- .port upon the increase ofspeed, because of its inertia, produces a very quick movement ofrotation between the weights and screw 96, the secondary support turningagainst the tension of the springs 92. This results in a movement of thecontrolling-rod in the same direction as that secured by an outwardtravel of the weights, but more promptly, thus effecting an immediatepartial correction by the governor, which is-continued more gradually bythe mechanism previously described until the desired movement isattained. If the weights acted alone upon the controlling mechanism,they would tend to cause too great a movement or to over-correct. Toobviate this difficulty and check the piston, the pulley 114 is rotatedby its spring, so thatthe shaft 111 is moved by. the This rotates thesleeve 108 and causes it to ascend the thread 109, so that the valve-rodas a whole is shortened, this continuing until the valve is restored toits initial position, at which the pressure is shut off both ends of thecylinder. To counteract the effect of the powercylinder upon the clutchto permit the return of the valve to its normal position and theconsequentchecking of the piston to stop the movement of 'the gate, acompound movement of translation is automatically imparted to, the*lever 42 in the following.

manner: As soon as the actuating-shaft begins its rotation through theconnection made by the clutch 20 it also rotates the shaft 55.right-handedly through the gearing 56. This causes the worm to move thelower portion of the lever to the ,rightnpon the rack-teeth nd thisbeing in the opposite utch. As long as; the piston e travel of the racktends to;

1 of the lever 42to the left or inwardly about 1 its lower endas afulcrum, the shaft 55 being for the time stationary and the segmentcontinues its movement the rate of travel of the'upper end of the leverwill exceed that of 'the lower and the clutch will remain in engagement;but as soon as the piston is checked by the return of the valve to itsnormal position this outward movement of the lever disengages the clutchand the movement of the gate at once ceases until the valve again acts.

As the above operations will restore the motor system to its normalspeed, the weights will return to the position they occupied before thechange occurred, and unless their eflect upon the valve-rodisneutralized they would move it in the opposite direction and destroythe balance of forces just attained. The mechanism actuated by the roll119 prevents this. While the weights occupy their normal position theroll will be at the center of thedisk 120 and will remain at rest; butas soon as the shaft moves longitudinally in acting to shorten thevalve-rod it carries the roll off the center to a point having rotarytravel. and the thread of the latter turning in the sleeve 116 moves theshaft to the right until the roll again reaches the axis of the disk,causing the sleeve 108 to be lowered upon the screw 109 and moving thevalve downward an amount equal to that which it is moved upward by thereturn of the weights. It will be evident that the farther the weightsdepart from the normal the farther the roll will be carried from thecenter of the disk and the more rapidly the shaft be rotated, andtherefore the neutralizing of the return of the weights will be at arate varying with the extent of their movement and the dis tance whichthe shaft has been moved, being at first most rapid, then graduallydecreasing as the roll returns to the center. The neutralizing effectwill, moreover, be substantially proportional to the rate of return ofthe weights to the normal.

The action of my improved governor will beto secure extremely rapid orprompt corrections for changes of speed of the motor governed, arisingfrom changes of load and the like, without permitting this correction tooverrun and produce a seesawing of the speed in opposite directions,thus securing an almost absolutely constant rotation of the motor andsystem driven thereby, while applying at all times ample power toovercome any resistance to movement of the gate or other regulatingmechanism. 7

As it may be desired at times to operate the regulating mechanism byhand, the shaft 12 may carry fast upon it a bevel-gear 131, meshing witha bevel-pinion 132 upon a spindle 133, turning in a support 134 andprovided with a hand-wheel 135. When this hand mechanism is in use, thepin-clutch 17 may be'drawn out of the gear to disconnect the governorfrom the motor controlling shaft.

It will be seen that apart from the consid- This rotates the roll andthe shaft,

eration of convenience in disconnecting and in general arrangement theshaft 12 might be entirely omitted and the shaft'l3 more or lessconnectors between the rotating means and actuating-shaft located inpart within said actuating-shaft, power mechanism acting upon theconnectors, and means for controlling the application of power.

2. In a governor, the combination with a motor-controlling shaft,0f ahollow actuating shaft therefor, means for rotating the actuating-shaftin opposite directions, connectors between the rotating means andactuatingshaft located in part within said actuatingshaft, powermechanism acting upon the connectors, and means for controlling theapplication of power.

3. In a governor, the combination with a hollow actuating-shaft, ofmeans for rotating the actuating-shaft in opposite directions,connectors between the rotating means and actuating-shaft located inpart within said actuating-shaft, a power-cylinder acting upon theconnectors, and a valve controlling the admission of pressure to thecylinder.

4. In a governor, the combination with an actuating-shaft, of twooppositelyrotating driving-shafts, pairs of coacting clutch members onemember of each pair being secured to the actuating-shaft and the otherto a driving-shaft, a power-cylinder acting upon one of the clutchmembers of each pair, and a valve controlling the admission of pressureto the cylinder.

5. In a governor, the combination with a motor-controlling shaft,of ahollow actuatingshaft therefor, two oppositely-rotating driving-shafts,pairs of coacting clutch members carried by the actuating shaft anddriving-shafts, and an operating member for the clutches movable withinthe actuatingshaft.

6. In a governor, the combination with a hollow actuating-shaft, of twooppositely-rotatin g driving-shafts, pairs of coacting clutch memberscarried by the actuating-shaft and driving-shafts, an operating memberfor the clutches movable within the actuating-shaft, a power-cylinderacting upon the operating member, and a valve controlling the admissionof pressure to the cylinder.

7. In a governor, the combination witha hollow actuating-shaft, of twooppositely-rotating driving-shafts, pairs of coacting clutch memberscarried by the actuating-shaft and driving-shafts, a rod movable withinthe actuating-shaft, and flexible members connecttoggle-lever,a flexiblemember connected ing the rod and one of each pair of clutch members. I

8. In a governor, the combination with a motor-controllingshaft, of ahollow actuatingshaft therefor, two oppositely-rotating driving-shafts,pairsof coacting clutch members carried. by the actuating-shaft anddrivingshafts, a rod provided with a recess movable within theactuating-shaft, and chains secured within the recess and to one of eachpair of clutch members.

9. In a governor, the combination with an actuating-shaft, twooppositely-rotating driving-shafts, an outer clutch member fast uponeach driving-shaft, a pair of arms fast upon the actuating-shaft, adivided ring carried by each arm within the outer clutch memried by eacharm within the outer clutch memher, a toggle-lever connecting the partsof the ring, a flexible member connected with the toggle-lever, apower-cylinder connected with the flexible member, and a'valvecontrolling the admission of pressure to the cylinder.

11. In a governor, the combination with an actuating-shaft, of twooppositely-rotating driving'shafts, an outer clutch member fast uponeach driving-shaft, a pair of arms fast upon the actuating-shaft, adivided ring carried by each arm within the outer clutch member, atoggle-lever connecting the parts of the ring, means for adjusting thelength of the with the toggle-lever, a power-cylinder connected with theflexible member, and a valve controlling the admission of pressureto thecylinder. v

12. In a governor, the combination with a motor-controlling shaft, of ahollow actuatingshaft therefor, two oppositely-rotating driving shafts,an outer clutch member fast upon each driving-shaft, a pair of arms fastupon the actuating-shaft, a divided ringcarried by each arm within theouter clutch member, a toggle-lever connecting the parts of the ring, anoperating member for the clutches movable within the actuating-shaft,and a chain connected with each toggle-lever and the operating means.

13. In a governor, the combination with a hollow actuating-shaft, ofmeans for rotating the actuatingshaft in opposite directions, connectorsbetween the rotating means and actuating-shaft located in part withinsaid actuating-shaft, power mechanismacting upon the connectors to causethe rotation of the ac tuating-shaft in one direction or the other,

effect of the power mechanism upon. the connectors.

14. In a governor, the combination with a hollow actuating-shaft, ofmeans for rotating the actuating-shaft in opposite directions,connectors between the rotating means and actuating-shaft located inpart within said ac tuating-shaft, power mechanism acting upon theconnectors to cause the rotation of the actuating-shaft in one directionor the other, and means operable from the actuating-shaft forcounteracting the elfect of the cylinder upon the connectors.

15. In a governor, the combination with a hollow actuating-shaft, of twooppositely-rot-atingdriving-shafts, pairs of coacting clutch members onemember of each pair being secured to the actuating-shaft and the othermember to a driving-shaft, a power-cylinder acting to effect theengagement of the clutches, and means for disengaging the clutchesindependently of the power-cylinder.

16. In a governor, the combination with a hollow actuating-shafttherefor, of two oppositely-rotating driving-shafts, pairs of coactingclutch members carried by the actuatingshaft and drivingshafts, anoperating memher for the clutches movable within the actuating-shaft, apower-cylinder acting to move the operating member in one direction, andmeans independent of the power-cylinder for moving the operating memberin the other direction.

17. In a governor, the combination with an actuating-shaft, of twooppositely-rotating driving-shafts, clutches connecting thedriving-shafts and actuating-shaft, a lever connected with the clutchesat a point intermediate its ends, power mechanism acting upon one end ofthe lever, and mechanism connected with the actuating-shaft for movingthe other end of the lever.

18. In a governor, the combination with an actuating-shaft, of twooppositely-rotating driving-shafts, clutches connected with thedriving-shafts and actuating-shaft, a lever connected with the clutchesat a point intermediate its ends, power mechanism acting upon one end ofthe lever to effect the engagement of the clutches, and mechanismconnected with the actuating-shaft for automatically moving the otherend of the lever to disengage the clutches.

19. In a governor, the combination with an actuating-shaft, of twooppositely-rotating driving-shafts, clutchesconnecting the drivingshafts and actuating-shaft, a leverconnected with the clutches at apoint intermediate its end and provided at each end with gear-teeth, arack meshing with one set of gear-teeth, a power-cylinder for operatingthe rack, a worm meshingwith the other set of teeth, and gearing forrotating the worm from the actuating-shaft.

20. In a governor, the combination with a hollow actuating-shaft, of twooppositely-r0- tating driving-shafts surrounding the actuating-shaft, anouter clutch member fast upon each driving-shaft, coacting inner clutchmembers fast upon the actuating-shaft, a rod within the actuating-shaft,chains connecting the rods and inner clutch members and lever, a swivelconnecting the rod with the lever intermediate its ends, and means forapplying power to the lever.

22. In a governor, the combination with a hollow actuating-shaft, of twooppositely-rotating driving-shafts surrounding the actuating-shaft, anouter clutch member fast upon each driving-shaft,coacting inner clutchmembers fast upon the actuating-shaft, a rod within the actuating-shaftconnected with theinner clutch members, a lever having projectionsintermediate its ends, a bearing into which the projections extendpermitting a bodily movement of the lever, a connector between the rodand lever projections, and means for applying power to both ends of thelever.

23. In a governor, the combination with a hollow actuating-shaft, ofmeans for rotating the actuating-shaft in opposite directions,connectors between'the rotating means and actuating-shaft located inpart within said actuating shaft, power mechanism acting upon theconnectors, means for controlling the application of power, and acentrifugal mechanism forv actuating the controlling means. a

24. In a governor, the combination with an actuating-shafu'of means forrotating the actuating-shaft in opposite directions, connectors betweenthe rotating means and actuating-shaft, power mechanism acting upon theconnectors, means for controlling the application of power, a primaryweight-support rotatable from the motor, a secondary weightsupportmounted to turn on the primary support and yieldably connectedtherewith, a centrifugal weight carried by the secondary support, and aconnector between the weights and controlling means.

25. In agovernor, the combination with an actuating-shaft, of means forrotating the actuating-shaft in opposite directions, connectors betweenthe rotating means and actuating-shaft, power mechanism acting upon theconnectors, means for controlling the application of power, a primaryweight-support rotatable from the motor, a secondary weightsupportmounted to turn on the primary support, and springs extending betweenthe primary support and secondary support.

26. In a governor, the combination with an actuating-shaft, of means forrotating the actuating-shaft in opposite directions, connectors betweenthe rotatingmeans and actuating-shaft', power mechanism acting upon theconnectors, means for controlling the application of power, acentrifugal weight rotatable from the motor, a rack mounted upon theweight, and a gear carried by the controlling means and meshing with therack.

27. In a governor, the combination with an actuating-shaft, of means forrotating the actuating-shaft in opposite directions, connectors betweenthe rotating means and actuating-shaft, power mechanism acting upon theconnectors, means for controlling the application of power, acentrifugal weight rotatable from the motor, a rack mounted upon theweight, a sleeve carried by the controlling means provided with aninternal thread and with external teeth meshing with the rack, andathreaded member with which the thread of the sleeve coacts.

28. In a governor, the combination with an actuating-shaft, of means forrotating the actuating-shaft in opposite directions, connectors betweenthe rotating means and actuating-shaft, power mechanism acting upontheconnectors, means for controlling the application of power, a rotatablecasing, a screw fixed to the casing, a centrifugal weight mov-- able inthe casing, a rod connected with the controlling means, and a threadedmember swiveled to the rod cooperating with the screw and geared to theweight.

29. In a governor, the combination with an actuating-shaft, of means forrotating the actuating-shaft in opposite directions, connectors betweenthe rotating means and actuating-shaft, power mechanism acting upon theconnectors, means for controlling the application of power, a rotatablecasing, a screw fixed to the casing, a centrifugal weight movable in thecasing, a rod connected with the controlling means, a threaded memberswiveled to the rod cooperating with the screw and geared to the weight,and means for adjusting the screw in the casing to vary the position ofthe threaded member thereon.

30. In a governor, the combination with an actuating-shaft, of means forrotating the actuating-shaft in opposite directions, connectors betweenthe rotating means and actuating-shaft, power mechanism acting upon theconnectors, means for controlling the application of power, a rotatablecasing, a screw fixed to the casing, a weight movable in the casing,means for permitting the weight to lag behind the casing when changes inits speed of rotation occur, a controlling-rod, and a threaded memberswiveled to the rod, said threaded member cooperating with the screw andgeared to the weight.

31. In a governor, the combination with an actuating-shaft, of means forrotating the actuating-shaft in opposite directions, connectors betweenthe rotating means and actuating-shaft, power mechanism acting upon theconnectors, means for controlling the application of power, a horizontalplatform rotatable from themotor and provided with ways, balls in theways, a centrifugal weight supported by the balls, anda connectorbetween the weight and controlling means.

32. In a governor, the combination with a hollow actuatingshaft, ofmeans for rotating the actuating-shaft in opposite directions,connectors between the rotating means and actuating-shaft located inpart within said actuating-shaft, power mechanism acting upon theconnectors, means for controlling the application of power, centrifugalmechanism for actuating the controlling means, and mechanism for connteractingthe effectof the centrifugal mechanism upon the valve.

33. In a governor, the combination with a hollow actuating-shaft, ofmeans for rotating the actuating-shaft in opposite directions,connectors between the rotating means and actuating-shaft located inpart within said actuating-shaft,apower-cylinder acting upon theconnectors, and a valve controlling the admissionof pressure to thecylinder, centrifugal mechanism for actuating the valve, and mechanismoperated by the element moved by the power-cylinder for counteracthollowactuating-shaft, of means for rotating the actuating-shaft in oppositedirections, connectors between the rotating means and actuating-shaftlocated in part within said actuating-shaft, power mechanism acting uponthe connectors, means for controlling the application of power,centrifugalweights for actuating the controlling means upon theirdeparture from the normal position, and means for neutralizing theefiect of the weights in their return to the normal.

35. In a governor, the combination with an actuating-shaft, of means forrotating the ac tuating-shaft in opposite directions, connec- H torsbetween the rotating means and actuatingshaft, a power-cylinder actingupon the threaded sleeve carried by said valve-rod, a

shaft at right angles to the valve-rod and cooperating with the sleeve,means for moving the shaft to rotate the sleeve, and means for returningthe shaft to its normal position at a speed varying with the distance towhich i tors between the rotating means and actuating-shaft, powermechanism acting upon the connectors, means for controlling theapplication of power, revoluble weights operating upon the valve-rod, athreaded sleeve carried by said valve-rod, a shaft at right angles tothe valve-rod and cooperati mg with the sleeve, means for moving theshaft longitudinally to rotate the. sleeve, a roll carried by the shaft,and .a continuously-rotatable member with which the roll contacts.

37. In a governor, the combination with a hollow actuating-shaft, ofmeans for rotating the actuating-shaft in opposite directions,connectors between the rotating means and actuating-shaft located inpart within the acmating-shaft, a power-cylinder acting upon theconnectors, a valve controlling the admission of fluid-pressure to thecylinder, revoluble weights operating upon the valve-rod, a

threaded sleeve carried by said valve-rod, a shaft cooperating with thesleeve, means for moving the shaft to rotate the sleeve, and means forreturning the shaft to its normal position at a speed varying with thedistance to which it has been moved.

38. In a governor, the combination with a hollow actuatingshaft, ofmeans for rotating the actuating-shaft in opposite directions,connectors betweeen the rotating means and actuating-shaft located inpart within the actuating-shaft, power mechanism acting upon theconnectors, means for controlling the application of power, revolubleweights operating upon the valve-rod, a threaded sleeve carried by saidvalve-rod, a shaft cooperating with the sleeve, means for moving theshaft j NATHANIEL LOMBARD.

Witnesses:-

WALTER E. LOMBARD, WILLIAM B. WOLFENDALE.

IOO

